Fig. 10
From: Spinal cord stimulation in chronic pain: evidence and theory for mechanisms of action
Stimulation Patterns in Paresthesia and Paresthesia Free SCS Paradigms: Traditional SCS comprised of tonic or repetitive low frequency SCS usually in the range of 40–60 Hz produces paresthesia of P-SCS (a). Paresthesia free, burst spinal cord stimulation (B-SCS) employs incremental increase in amplitude with each burst. Inter-burst frequency is 40 Hz, while intra-burst frequency is 500 Hz (b). Between each burst there is a passive recharge phase. Paresthesia free high frequency SCS employs an ultra-high frequency of 10 kHz in continuous mode (c)